package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

@Service
public class PaymentService {
    private static AtomicInteger count = new AtomicInteger(0);

    public String paymentInfoOK(Integer id) {
        return "线程池： " + Thread.currentThread().getName() + "\t" + "paymentInfoOK(),id:" + id + "\t" + " \"O(∩_∩) 成功返回哈哈哈";
    }


    @HystrixCommand(fallbackMethod = "paymentInfoTimeOutHandler", commandProperties = {@HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")})
    public String paymentInfoTimeOut(Integer id) {

        System.out.println("第" + count.getAndIncrement() + "请求");
        Integer timeOutNumber = 6000;
//        int age = 10 / 0;
        try {
            TimeUnit.MILLISECONDS.sleep(timeOutNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        return "线程池:  " + Thread.currentThread().getName() + " id:  " + id + "\t" + "O(∩_∩)O哈哈~" + "  耗时(秒): " + timeOutNumber;
    }

    public String paymentInfoTimeOutHandler(Integer id) {
        return "线程池:  " + Thread.currentThread().getName() + "  8001系统繁忙或者运行报错，请稍后再试,id:  " + id + "\t" + "o(╥﹏╥)o";
    }

    //=====服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"),// 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName() + "\t" + "调用成功，流水号: " + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(Integer id) {
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " + id;
    }

}
